Deno’s Garden

Alnus glutinosa

Genus Alnus

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 27, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 9 days to germinate.

65% germination in 7–9 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Alnus p. 18Public domain
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Alnus (Betulaceae). All samples were received in March, and had already undergone at least 6 m of DS and probably more. Since DS was clearly detrimental in A. glutinosa germ. 70L(65% in 7-9 d) and 70D(20% in 1-4 w). A prior 3 m at 40, OT, GA-3, or DS 6 m had little effect.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Alnus p. 18. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 28 days to germinate.

20% germination in 7–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Alnus p. 18Public domain
Show the original text
Alnus (Betulaceae). All samples were received in March, and had already undergone at least 6 m of DS and probably more. Since DS was clearly detrimental in A. glutinosa germ. 70L(65% in 7-9 d) and 70D(20% in 1-4 w). A prior 3 m at 40, OT, GA-3, or DS 6 m had little effect.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Alnus p. 18. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.